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Feature #957

New function: HasGBasis

Added by Anna Maria Bigatti over 7 years ago. Updated almost 7 years ago.

Status:
Closed
Priority:
Normal
Category:
New Function
Start date:
27 Oct 2016
Due date:
% Done:

100%

Estimated time:
2.01 h
Spent time:

Description

How to know if the GBasis has already been computed? there is a member flag (myGBasisIsValid), but we should have a function (also in cocoa5): sometimes we could have different strategies depending on whether a GBasis is known or not.


Related issues

Related to CoCoALib - Feature #961: New function: ReducedGBasisClosed2016-11-03

Related to CoCoALib - Feature #949: New function: IdealWithIncrementalGBasis(I, f)New2016-10-18

Related to CoCoALib - Feature #931: GBasis verbose modeClosed2016-09-24

Related to CoCoA-5 - Slug #405: ReducedGBasis not memorized in an idealClosed2013-10-09

Related to CoCoALib - Bug #349: IdealOfPoints: gens are actually a GBasisClosed2013-05-18

Related to CoCoA-5 - Feature #996: New function: IdealOfGBasisClosed2017-01-12

Related to CoCoA-5 - Design #1020: Rename minimalized(I) into IdealOfMinGens(I)?Closed2017-03-06

History

#1 Updated by Anna Maria Bigatti over 7 years ago

  • % Done changed from 0 to 10

I implemented it.
It took a remarkably long time mostly for choosing the name and deciding where to put it.
In fact this could be HasTidyGens in the abstract class ideal.

#2 Updated by Anna Maria Bigatti over 7 years ago

Also implemented the member function IHaveGBasis

#3 Updated by John Abbott over 7 years ago

  • Status changed from New to In Progress

Even though I invented it, I do not much like the name TidyGens...

Also, it is not clear to me how to deal with the situation where an ideal might have both a GBasis and a JBasis (or even a Pommaret basis); what should TidyGens produce in such a case?

#4 Updated by Anna Maria Bigatti about 7 years ago

  • Related to Feature #961: New function: ReducedGBasis added

#5 Updated by Anna Maria Bigatti about 7 years ago

  • Related to Feature #949: New function: IdealWithIncrementalGBasis(I, f) added

#6 Updated by Anna Maria Bigatti about 7 years ago

#7 Updated by Anna Maria Bigatti about 7 years ago

  • Related to Slug #405: ReducedGBasis not memorized in an ideal added

#8 Updated by Anna Maria Bigatti about 7 years ago

  • Related to Bug #349: IdealOfPoints: gens are actually a GBasis added

#9 Updated by Anna Maria Bigatti about 7 years ago

  • Related to Feature #996: New function: IdealOfGBasis added

#10 Updated by Anna Maria Bigatti about 7 years ago

  • Status changed from In Progress to Feedback
  • % Done changed from 10 to 90

#11 Updated by Anna Maria Bigatti about 7 years ago

  • Related to Design #1020: Rename minimalized(I) into IdealOfMinGens(I)? added

#12 Updated by Anna Maria Bigatti almost 7 years ago

  • Status changed from Feedback to Closed
  • % Done changed from 90 to 100
  • Estimated time changed from 4.00 h to 2.01 h

#13 Updated by Anna Maria Bigatti almost 7 years ago

  • Target version changed from CoCoALib-0.99560 to CoCoALib-0.99550 spring 2017

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